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Finding the Fourth Proportional to 28,821.80, 43,232.70 and 22,989.80

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Solution

The fourth proportional to 28,821.80, 43,232.70 and 22,989.80 is: 34,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.80 : 43,232.70 = 22,989.80 : x
  2. Step 2: Convert to fraction form
    28,821.80/43,232.70 = 22,989.80/x
  3. Step 3: Cross multiply
    28,821.80x = 43,232.70 × 22,989.80
  4. Step 4: Simplify right side
    28,821.80x = 993,911,126.46
  5. Step 5: Solve for x
    x = 993,911,126.46/28,821.80
  6. Step 6: Final answer
    x = 34,484.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.